Improvement in plows



2 Shefs-Snee L E. G. MATTHEWS,

lmprovementin Flows.

N0. 123,272, l PartentedJamSOJSQ.

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N0. 123,272. PatenedJamSO, 1872..

ELBRIDGE G. MATTHEVS, OF OAKHAM, ASSIGNOR TO FRANKLIN HOL- BROOK AND THOMAS B. EVERETT, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN PLCWS.

Specification forming part of Letters Patent No. 123,272, dated J annary 30, 1872.

To all whom it may concern:

Be it known that l, ELBRIDGE G. MAT- THEWS, of Oalrham, in the county of Vorcest-er efand Commonwealth of Massachusetts, have invented certain new and useful Improvements in Steel Swivel-Blows for general use ou level and hill-side ground; and I do hereby declare the following to be al full, clear, and exact description of the same, reference being had to the accompanying drawing which forms apart of this specifica-tion, and in which- Figure l represents a plan view of a swivelplow embracingr my improvements. Fig. 2 represents a view ot' the land-side .of same. Fin', 3 represents a rear view. Fig. 4 represents an under-side view ot' the mold-board, share, and frog. Fig. 5 represents an upper-side view of the mold-board and share. Fig. 6 represents a transverse section of the mold-board, sha-re, and frog at line A B, Figs. 5 and (5. Fig. 7 represents a perspective View of the dog-brace separate from the plow. Fig. S represents a section of the dog-brace at line C D, Fig. 7 5 and Fig. 9 represents, on a somewhat larger scale, a transverse section ofthe standard-shoe.

This invention relates to certain improvements in the construction of the various parts of aswivel-plow and in the combination of said parts with each other, whereby a stronger, lighter, and more efiicient swivel-plow for general use is obtained, while the cost ot' manufacture is reduced.

In the drawing, the parts marked A represent the plow-beam. B indicates the mold board, which may be pressed from sheetsteel or made from any other suitable material. O indicates the share or point, which is pressed from sheet-steel of proper thickness. D D indicates the standard, E indicates the frog, F indicates the dog-brace; and G, the swardcutter. H H indicate steel land-side facings, which are attached to each side of the lower portion of the standard D D', as illustrated. These facin gs, being of steel, can be made quite thin and light, while their hardness prevents the rapid wearing away of the parts, and also retains a smooth bright surface. The lower part of the standard is formed with ribs, and the facings H secured to said ribs byvscrews 0r rivets a. The bottom of the standard is shod with a peculiarly-constructed shoe, I, which is provided with two upward-projectin g lon gitud inal anges, c e, which lit up between the lower edges of thefacing pieces .H and the lower edge of the standard-loot, which latter is grooved out for their reception. The shoe is secured in place by screw-bolts set up through it from the under side. This shoe I can readily be replaced when worn out. The frog E is made of malleable iron, and is formed in thc peculiar manner as indicated inthe drawing. .lt is provided with a-n opening' in its lower part to receive the pivot at the forward part ot' the standard, and with bac-kward-projecting ears E', which support the mold-board, while its lateral edges d cl are turned upward so as to lit up against and support the share, which latter is secured to the edges or lips d by screws, bolts, or rivets e, in the manner shown. The mold-board B extends down over the frog E with a long point, B', and is secured to the. frog by screws or rivets j'near its edge, which iits aga-inst the inner edge ofthe share. Strengthenin g flanges g are formed on the rear edge of the frog, while a central longitudinal flange or bridge-bar, h, is formed at its central parte, extending from the shoulder ofthe frog back to the iiange g, and provided with asuitable opening to receive the hooked end ofthe dog-brace rod J, as illust-rated. The frog -point K is formed separate from the other portion of the frog E, and is brazed 011 or otherwise rigidly secured to the point ot' the share, and is joined to the frog by a dowel-pin and bevel-joint, as shown in Fig. 2. The share C is formed of two supporting and cutting wings, O', which diverge from the point O2 and lit along the edges ofthe front part B of the mold-board, resting upon the edges or lips d ot' the frog E, to which they are secured in the manner before stated.

The sha-re C is stamped from sheet-steel and pressed to the proper curvature by suitable dies, the supporting edges b being rolled upward to correspond with and meet the curve of the mold-board; and it will be observed that the forni ofthe share is such that a number of shares can be cut from a sheet of metal with but very little waste of stock, as the point of one share may be cut from the space left by the V or angle ofthe other. I am enabled to use this shape of share by constructing the frog E ofthe peculiar form shown, with its side lips or curved edges for supporting the inner edges ot' the share, thus obviatiug the necessity of reeessing the edge of the moldboard to receive and support the edges of the share, as has heretotbre been practiced. The dog-brace F is made of malleable iron, and is of the peculiar form illustrated in Figs. 7 and 8, its two side bars being' formed angular or with iianges K along their outer edges, and the pintle l at the lower end being formed hollow, as shown. The upper ends z' are turned forward so as to hook into the eyes upon the uuder side of the mold-board. These ends are also hollowed out upon their upper sides, so that allparts ot' the brace are brought nearly to a unit'orm thickness, which insures lightness and a more perfect malleability ot' the iron, and also prevents the cracking of the castings, when cooling7 by unequal shrinkage. A bolt, J, extends from the central flanged cross-bar F ofthe dog-brace F to the under side ofthe frog E, to which its Jforward end is secured by being hooked into an opening in the tlan ge h, while its rear end is passed through an opening in the cross-bar ofthe dog-brace F, and is provided with a nut, j, which is turned up against the outside of the cross-bar in the manner illustrated. The rod J serves to hold the dog-brace F in position, and thereby connect the mold-board with the standard and retain the supporting or swivel pivots in place. The dog-brace is arched outward somewhat in order to render its strength greater, and to enable it the better to withstand the strain of the rod J. The mold-board may be held up to the beam A by means of a hook, L, in the ordinary manner, and the handles ot' the plow secured as usual to the rear part D ot' the standard. The sward-cutter Gr is a rotary eutter, and is attached to the beam of the plow in such a manner as to be adjustable laterally and vertically. A sliding plate, m', is arranged between suitable guides on the under side of the beam A, and the cutter-supporting standard M is east upon the under side ot' said plate.

The bearing pieces N which contain the bearings of the cutter-spindle are arranged in vertical grooves formed within the standard M in such a manner that said pieces eau be moved up or down to adjust the height of the cutter, and when so adjusted the parts are held in position by the screws or bolts m. A lever, O, is pivoted to one side ot the slide-plate M', and fulcrumed on a suitable pin, n, on the side of the beam. Said lever extends back to the rear ot' the plow, and by means of the said lever the operator is enabled to move the swardcritter laterally to adjust it to the proper position when the plow is reversed. Any suitable ratchet or catch device may be combined with the lever forholdiug the parts in any adjusted position.

Having described my improvements in steel swivel-plows, what I claim therein as new and ot'my invention, and desire t-o secure byLetters Patent, is-

l. The t'rogE, provided with the curved sharesupporting edges or lips d d, substantially as described, and for the purpose set forth.

2. The combination, with the plow-beam A and circular or rotary cutter G, ot' a laterallyadjustable frame or supporting standard M M', substantially as and for the purposes set forth.

3. The combination, with the laterally-adjustable supportingstandard M M and rotary sward-eutter G, ot' the vertically-adjustable bearing pieces N and holding-screws or bolts m, substantially as aud for the purposes set forth.

et. rlhe combination, with the laterally and vertically adjustal'Jle cutter-supporting frame M M P and plow-beam A, ot' the hand-lever O, for adjusting the cutter from the rear ofthe plow, substantially as shown and described.

ELBRIDGE G. MATTHEWS.

Witnesses:

G. W. CLAPP, MARK HAsKELL. 

